单项选择题

Suppose there were a flood or an earthquake and the people could not be reached by trains or trucks.（）packages of food could be dropped from planes, the people might starve.

A. Until
B. Before
C. Unless
D. If only

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单项选择题
How much does one ticket cost（）

A．$ 1.40.
B．$ 6.40.
C．$ 4.30.
D．$ 8.60.
单项选择题
What kind of ticket does the woman want to book（）

A．Seat ticket.
B．Sleeper ticket.
C．Single ticket.
D．Return ticket.
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